Type 1 or Type 12 exhaust option for TFP Filter Fans. This TFP Exhaust Grille, TEP4UL12 item fits 4-in. Fan Pkg with material of Composite colored Lt Gray. TEP4UL12 EXHAUST GRILLE TYPE 12
TFP Exhaust Grilles includes standard replacement filters that are washable foam (Type 1) or disposable (Type 12)To maintain UL Type 12 rating on the enclosure, UL Type 12 filters must be used on the fan package inlet
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Primary Spec Sheet
https://static.graybarcanada.com/Generic/xml_nvent/pdf/documents/644fba52686efc1ed16a855e20f8f979a2758a8a.pdf
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Spec Sheet
https://static.graybarcanada.com/Generic/11015_uy9vlbzj6pcswrim.pdf